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Created on 2015-05-01 14:12 by pkt, last changed 2022-04-11 14:58 by admin. This issue is now closed.
| Files | ||||
|---|---|---|---|---|
| File name | Uploaded | Description | Edit | |
| poc_siftup.py | pkt, 2015-05-01 14:12 | |||
| Messages (3) | |||
|---|---|---|---|
| msg242318 - (view) | Author: paul (pkt) | Date: 2015-05-01 14:12 | |
# Breakpoint 1, _siftup (heap=0x4056b344, pos=65534) at /home/p/Python-3.4.1/Modules/_heapqmodule.c:121
# warning: Source file is more recent than executable.
# 121 Py_DECREF(PyList_GET_ITEM(heap, pos));
# (gdb) print *heap->ob_item[pos]
# $1 = {_ob_next = 0x41812058, _ob_prev = 0x831159c <refchain>, ob_refcnt = 1, ob_type = 0x4058fd1c}
# (gdb) n
# 122 PyList_SET_ITEM(heap, pos, newitem);
# (gdb) print *heap->ob_item[pos]
# Cannot access memory at address 0x3fff8
# (gdb) print *heap
# $2 = {ob_base = {ob_base = {_ob_next = 0x4059c0b4, _ob_prev = 0x405903b4, ob_refcnt = 2, ob_type = 0x830e1c0 <PyList_Type>},
# ob_size = 0}, ob_item = 0x0, allocated = 0}
# (gdb) n
#
# Program received signal SIGSEGV, Segmentation fault.
# 0x4002f150 in _siftup (heap=0x4056b344, pos=65534) at /home/p/Python-3.4.1/Modules/_heapqmodule.c:122
# 122 PyList_SET_ITEM(heap, pos, newitem);
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| msg242410 - (view) | Author: Roundup Robot (python-dev)  |
Date: 2015-05-02 17:07 | |
New changeset 813854f49f9d by Raymond Hettinger in branch '3.4': Issues #24099, #24100, and #24101: Fix free-after-use bug in heapq. https://hg.python.org/cpython/rev/813854f49f9d |
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| msg242415 - (view) | Author: Roundup Robot (python-dev) |
Date: 2015-05-02 17:27 | |
New changeset d356e68de236 by Raymond Hettinger in branch '2.7': Issues #24099, #24100, and #24101: Fix free-after-use bug in heapq. https://hg.python.org/cpython/rev/d356e68de236 |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:58:16 | admin | set | github: 68289 |
| 2015-05-04 11:22:19 | rhettinger | set | status: open -> closed resolution: fixed |
| 2015-05-03 06:52:14 | Arfrever | set | nosy:
+ Arfrever |
| 2015-05-02 17:27:06 | python-dev | set | messages: + msg242415 |
| 2015-05-02 17:07:45 | python-dev | set | nosy:
+ python-dev messages: + msg242410 |
| 2015-05-02 04:51:26 | serhiy.storchaka | set | nosy:
+ serhiy.storchaka |
| 2015-05-02 04:10:02 | rhettinger | set | assignee: rhettinger nosy: + rhettinger |
| 2015-05-01 14:14:43 | christian.heimes | set | nosy:
+ christian.heimes stage: needs patch components: + Extension Modules versions: + Python 3.5 |
| 2015-05-01 14:12:55 | pkt | create | |